R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 77

• Manufacturer Part Number: R5F21257SNFP#U0
• Description: IC R8C/25 MCU FLASH 52LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/25r

Specifications of R5F21257SNFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, Voltage Detect, WDT
• Number Of I /o: 41
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 52-LQFP
• For Use With: R0K521256S000BE - KIT EVAL STARTER FOR R8C/25
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 7.12
Figure 7.13
Port P2 Drive Capacity Control Register
Port Mode Register
b7 b6 b5 b4 b3 b2 b1
NOTE:
b7 b6 b5 b4
1.
0 0
Both “H” and “L” output are set to high drive capacity.
Feb 29, 2008
b3 b2
0
0
PMR Register
P2DRR Register
b1
0
b0
b0
0
Bit Symbol
Bit Symbol
U1PINSEL
P2DRR0
P2DRR1
P2DRR2
P2DRR3
P2DRR4
P2DRR5
P2DRR6
P2DRR7
(b3-b0)
(b6-b5)
Symbol
Symbol
P2DRR
IICSEL
PMR
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P2_0 drive capacity
P2_1 drive capacity
P2_2 drive capacity
P2_3 drive capacity
P2_4 drive capacity
P2_5 drive capacity
P2_6 drive capacity
P2_7 drive capacity
Reserved bits
Port CLK1/TXD1/RXD1 sw itch bit
Reserved bits
SSU / I
2
C bus sw itch bit
Address
Bit Name
Address
Bit Name
00F4h
00F8h
Set P2 output transistor drive capacity
0 : Low
1 : High
Set to 0.
0 : I/O ports P6_5, P6_6, P6_7
1 : CLK1, TXD1, RXD1
Set to 0.
0 : Selects SSU function
1 : Selects I
(1)
2
C bus function
After Reset
After Reset
Function
Function
00h
00h
7. Programmable I/O Ports
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
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